The reason why Christians are so obsessed with gays (and anything they perceive as sexual immorality) in my view is rooted in the concept of "moral disgust" [https://en.wikipedia.org/wiki/Jonathan_Haidt#Moral_disgust]. If any of you are familiar with Jonathan Haidt he does a lot of work and research into the psychology behind different systems of morality and this concept of disgust figures prominently into his thinking. In this context it basically means that fundamentally the aversion to homosexuality is based on a feeling of disgust among believers, and this visceral reaction to it has survived to this day as an inheritance from our ancient ancestors who blended causes for sickness with immorality.
It's less common now, but if you asked a Christian (or a practicing Jew, Muslim, etc.) why they think homosexual sex is sinful, they would express disgust by claiming it's unnatural and therefore unhealthy. Even when it is proven that two people of the same sex can have a sexual relationship safely, that does little to dislodge the idea of it somehow being harmful to one's health. In recent years this argument against it has died down but Christians still cling to the idea that being a practicing homosexual leads to some kind of maladies, if not physical then spiritual. This is the essence of the moral disgust such believers associate with homosexuality.
So why is homosexuality so obsessed upon? I believe because it evokes such a visceral reaction of moral disgust from Christians and other believers that it is easier to harp on issues like these that are so rooted in emotional centers (which are the origins of those feelings of disgust and revulsion), than focus on more distant, less emotional matters deemed sinful.
It's less common now, but if you asked a Christian (or a practicing Jew, Muslim, etc.) why they think homosexual sex is sinful, they would express disgust by claiming it's unnatural and therefore unhealthy. Even when it is proven that two people of the same sex can have a sexual relationship safely, that does little to dislodge the idea of it somehow being harmful to one's health. In recent years this argument against it has died down but Christians still cling to the idea that being a practicing homosexual leads to some kind of maladies, if not physical then spiritual. This is the essence of the moral disgust such believers associate with homosexuality.
So why is homosexuality so obsessed upon? I believe because it evokes such a visceral reaction of moral disgust from Christians and other believers that it is easier to harp on issues like these that are so rooted in emotional centers (which are the origins of those feelings of disgust and revulsion), than focus on more distant, less emotional matters deemed sinful.
